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NORMAN S. \VHITE AND AARON DENIO, OF SHAFTSBURY, VEROMNT.

METHOD 0F ATTACI-IING CUTTING-TIPS TO AUGER-SHANKS.

Specification of Letters lDatent No. 22,394, dated December 21, 1858i.

To all whom it may concern:

Be it known that we, NORMAN S. VHITE and AARON DENIo, of Shaftsbury, in the `county of Bennington and State of Vermont,

have invented a new and useful Improvement in the Construction or Manufacture of Angers, which we denominate the Movable Headed or Cut Auger; and we do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings and to the letters of reference marked thereon, making a part of this specification, the same or like letters referring to the same parts.

The nature of our invention consists in preparing' the body of the auger, independent of the head, or cut, in the usual form, and of any suitable wrought or cast metal, having about one-third of its width in the center at the bottom cut off horizontally; and the side or spiral edges cut verticallyso that the sharp edges of the sides extend below the horizontal line-and having a hole in the center to receive the center tenon in the top of the head. The head may be, in length, about one-half inch, more or less, ac` cording to the size of the auger; and all in the usual form, except, having its upper end cut off in the same form, and so as to fit accurately to the lower end of the body, so as when confined together, to have the appearance of the common solid auger.

But to enable others to make and use our said invention, we proceed to give a more detailed description of the construction and operation by reference to the accompanying drawings (viz.)-

Figure l, a projection of the body and head of the auger, so far separated as to show the joint. Fig. 2, a section of the body, showing the joint, as cut off in the center and spiral edges. Fig. 3, a section showing the tenon, in the center, and top of the head.

Fig. t section showing the worm screwlips-cut and tenon--all appendages of the head.

B, the body of the auger is of the usual formA and length, (except that part commonly called the head or cut) having about one-third of its breadth cut off to form the horizontal joint 71., and the spiral edges cut vertically to form the splice joint S, with the spiral edges of the head which are fitted in the same manner as those of the body. 7L, the line across the space in the center indicating the horizontal joint. j, the form of the horizontal joint in the center of the head and body. s, the vertical faces of the spiral edges, forming the splice joints. t, the tenon, or pin in the center of the head, fitted to extend up into the aperture a, by which the two sections are confined together'. a, the aperture in the center to receive the tenon or pin t. e, the small screw near the bottom of the body passing through a notch in the side of the tenen, or pin t, to confine the head to the body. Z, the lips or vertical edges or cuts of the head in the usual form. c, the cutting edges at the bottom of the head, in the usual form. fw, the worm screw, in the usual form.

Operation: The bodies and heads of the augers being made in two separate parts, and whether the bodies be new or old, they are so fitted as to be united, as herein specilied; the tenon t is passed into the aperture a, and the vertical faces s, forming the splice, are brought to a perfect joint and confined together by the screw e, forming a perfect auger fit for use, whether the body be new or old.

Our object in making in two sections is economy in cost. It is well known that the lips, cuts, and worm screws, all appendages of the head, are commonly broken or worn out while the body remains whole and sound; and by having a supply of heads (properly fitted) of cast steel, which, comparatively, costs but little, one body will serve to wear out several heads.

le do not claim, broadly, attaching the cutting parts to the screw shaft of angers; but

XVe do claim- The specific manner set forth and shown in the specification and drawings.

llllitnesses:

JOHN HAs'rrNGs,

WM. W. MATTIsoN.

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